What’s the computer / software equivalent of a poem? What’s the software equivalent of a poet? Or a software song? Or a software sketch?

These are kind of silly questions, because poems and songs and sketches are so much more than “small versions of bigger things” (a poem, for example, is much more about what it expresses than the fact that it’s usually short).

But still I wonder, can you make a little thing that captures a feeling? That by watching it or by using it or by exploring it, you somehow recreate that feeling? A feeling that’s bigger than just what you see in front of you, bigger maybe than the sum of its parts? Can you express a feeling as a system?